The engineering education mode of CDIO is the achievement of international engineering education reform in recent years. CDIO aims to cultivate all-round innovative engineering and technical personnel. Electric circuit, a both science and engineering course, is the first specialized basic course for the students of electronic information specialty. The necessity of circuit teaching reform is analysis, and the engineering and scientific researches throughout teaching process are focused on. The teaching mode and realization way of electric circuit course based on CDIO education ideas is introduced. And then, the reform and practice of teaching content, teaching activities, teaching methods and curriculum assessment are discussed, which highlights to foster the engineering practice ability, innovation ability, team cooperation ability and working ability for the students of electronic information specialty.